Improvement in lamps



JOHN S. HULL.

Improvement in Lamps.`

N0.124,823 Patented March19,18712.

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c guoene oneaa noneoa deconne JOHN S.'HUIIII, OF CINCINNATI, OHIO.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 124,823, dated March 19, 1872 antcdatcd March 2, 1872.

SPECIFICATION.

I, JOHN S. HULL, of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Fluid- Lamps, of which the following is a specication:

Nature and Objects of the Intention.

My invention relates to that class of vapor lamp-burners which are fed by capillary attraction; and consists in the application of appropriate means for the isolation of heat from the tluid in the reservoir, all of which will be fully understood by reference to the drawing and following general description.

i Description of the Accompanying Drawinj.

Figure 1 is a vertical section through the center of the lamp and burner embodying my invention. i

General Description.

A is the base of the lamp below the rcservoir. O is a safety-wick chamber through the center of the reservoir B, and is made of wiregauze or other suitable material. H is the burner, the holes 7L h of which for the egress of the vapor are made conical with the cone, increasing outward, and are arranged between the ilanges c and l. The office of the upper flange cis toreceive heat from the flame to be transmitted to the fluid. rlhe lower ange lis particularly designed to protect the jets of name from currents of wind or air, which otherwise would extinguish the light, and at the same time serves as a heater. I make the iianges in one piece with the burner, and prefer to have the flame jets close to the lower one, in which, immediately under the jets, I make a groove, which allows a free circulation of` air; keeps the holes free from obstruction; and dispenses with the necessity of air-holes through the ilange. in is a sleeve or thimble, made in one piece with or attached to the cap or burner H. nis the wick-pipe leading from the reservoir to the burner, the upper end` of which is made with a threadl to fit the thread of the sleeve m, as shown. By means of these male and female threads the burner may be elevated or depressed at pleasure. When it is desired to diminish the volume of light and flame the cap should be elevated, and when it is desired -to extinguish the light and immediatelystop the flow of vapor it should be screwed down tight. It is` the isolation-chamber, which is made with a flange, S, at its lower end for the purpose of increasing its strength and tting tightly upon the collar of the lamp,

into which it screws. At the top ofthe chamber there is a ring, P, fitted to the wick-pipe, which projects in the form of a flange. Im-

` mediately against this ring I place a paper or leather washer, or both, as shown at Q. The chamber R is iitted tightly up against the washer, and the space between the wick-tube and the wall of the chamber R is packed with cork to the depth of about half an inch. The lling is then continued with plaster-Paris or other suitable cement to within about half an inch ofthe bottom, when the packing is completed with cork. Under the lower side of the ilange S is placed a paper or leather washer, or both, as shown at S'. That portion of the wick-pipe on, when made of brass, which is between the anges P and S4 is severed and a piece of tin or other slow conductor of heat soldered in. The whole is kept tight and in place by a plate screwed on the lower end of the wick-pipe. This plate must not touch the sides of the surrounding metal.

Claim.

Having thus described my invention, what Iv claim as new, and desire to secure by Letters Patent, is-

In combination with the burner and wickA tube, the isolation chamber, composed sub stantially of the part R and its filling of cork and plaster-Paris, and the washers Q and/S', arranged as herein shown and described. Y

JOHN S. HULL.

Witnesses:

E. E. Woon, A. MCCANDLESSa 

